New Equipment | Test Equipment
PROCESS SCIENCES, INC. (PSI) Visit our main Ion Chromatography page for more information. Ion Chromatography analysis (IC) is an essential tool for both failure analysis and process validation. PSI uses IC to investigate surface contamination and m
New Equipment | Solder Materials
Cobar XF3 Solder Paste Completes SN100C Solder Materials System; Superior Reflow, Printing Performance over SAC Alloys. XF3 is a lead-free solder paste, developed to accommodate extended reflow profiles without use of nitrogen. XF3 completes the
Electronics Forum | Wed Oct 27 08:46:20 EDT 2010 | adlsmt
We are having metal migration issues with SOT 223 and TO 220 parts runing at 500V DC. We are using no clean flux and suspect that is causing the problem. Does anyone have any experience with these levels of DC voltages or know of any consulting firm
Electronics Forum | Mon Jun 25 03:52:24 EDT 2012 | awtm
Our Customer had detected tarnished pad on ImAg PCBA and had conducted several SEM-EDX test at the soldermask below some of the chip resistors. High concentration of sulfur was found and it can be significantly reduced after further chemical cleaned
Industry News | 2011-05-03 22:50:52.0
Assemblers who have tried to resolve problems that stem from the rapidly growing array of advanced packages are getting some help from IPC with the newly released IPC-7093, Design and Assembly Process Implementation for Bottom Termination Components. This standard describes the critical design, assembly, inspection, repair, and reliability issues associated with bottom termination components (BTCs) whose external connections consist of metallized terminals that are an integral part of the component body.
Industry News | 2011-09-12 15:42:18.0
For the past year, engineers from companies like Honeywell Aerospace and Rockwell Collins have been meeting to lay the groundwork for IPC-A-630, Requirements and Acceptance for Enclosures, better known as “the box build standard.” These volunteers have come largely from the OEMs that specify the cabinetry they will use.
Technical Library | 2009-10-14 21:17:47.0
Electrochemical migration (ECM) is defined as the growth of conductive metal filaments across a printed circuit board (PCB) in the presence of an electrolytic solution and a DC voltage bias. ECM, also known as dendritic growth, is a critical issue in the electronics industry because the intermittent failure behavior of ECM is a likely root-cause of the high occurrence of field failures identified as no trouble found (NTF)/could not duplicate (CND)
Technical Library | 2019-05-01 23:18:27.0
Moisture can accelerate various failure mechanisms in printed circuit board assemblies. Moisture can be initially present in the epoxy glass prepreg, absorbed during the wet processes in printed circuit board manufacturing, or diffuse into the printed circuit board during storage. Moisture can reside in the resin, resin/glass interfaces, and micro-cracks or voids due to defects. Higher reflow temperatures associated with lead-free processing increase the vapor pressure, which can lead to higher amounts of moisture uptake compared to eutectic tin-lead reflow processes. In addition to cohesive or adhesive failures within the printed circuit board that lead to cracking and delamination, moisture can also lead to the creation of low impedance paths due to metal migration, interfacial degradation resulting in conductive filament formation, and changes in dimensional stability. Studies have shown that moisture can also reduce the glass-transition temperature and increase the dielectric constant, leading to a reduction in circuit switching speeds and an increase in propagation delay times. This paper provides an overview of printed circuit board fabrication, followed by a brief discussion of moisture diffusion processes, governing models, and dependent variables. We then present guidelines for printed circuit board handling and storage during various stages of production and fabrication so as to mitigate moisture-induced failures.
40731 | https://www.smta.org/harsh/Harsh-Environments-Program-2019.pdf?v=20052905555
Surface Mount Technology Association (SMTA)
| https://www.eptac.com/surge-in-consumer-electronics-caused-by-rising-demand-for-telecommunications-equipment/
), the convergence of information technology (IT) and operation technology (OT), and the migration to the cloud at a faster pace. The COVID-19 pandemic has, and will continue to, accelerate trends in remote/distributed work, virtual meetings, and electronic collaboration
